Anchor shuttle-box motion for looms



(No Model.) v

' C. ST'R'OBBLf ANGHOR SHUTTLE BOX MOTION POR LOOMS. No. 290,138. y 'Patented Dec..11,'1883.r

N. Frrsns. Mmmm. WMI-lum. D. c

'box motion embodying my invention.

UNITED STATEs d'lieu-31m` OFFICE.'

CHARLES STROBFL, OF PHILADELPHIA, PENNSYLVANIA.

ANCHOR SHUTTLE-BOX MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 290,138, dated December 11, 1883.

Application filed September 27, 1881. (No model.)

.To all whom t may concern.-

ABe itknown that I, GHxRLEs STROBEL, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania,-have invented anew and useful Improvem'entin Anchor Shuttle-Box Motions for Looms, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure l is a side elevation of the shuttle- Fi 2 is an end view thereof, the shuttle-boxes bing omitted. Fig. 3 is a vertical section on line x x, Fig. 1. p

Similar letters of reference indicate corresponding parts in the several figures. y

The ordinary anchor-box motion consists of along oscillating lever, which vlever is connected to and acts on the shuttle-box rod. Said long lever has a series of steps on opposite sides of its fulcrum, which steps are acted on alternately in raising or depressing the shuttie-boxes by a double-acting lifting-pawl, or, as it is generally called, the anchon77 `Said anchor swings near the lower end of what is called the yok e, said yoke sliding in guides on the loom-frame, and havinga vertical movement limited and controlled by the lift or drop of a cam on one of the loom-shafts, said cam acting on a friction-roller mounted on a stud near the top of the yoke. Said cam ordinarily has only lift or drop enough to allow the yoke and anchor to descend so far as is necessary to allow the anchor to swing under one step, said step being acted on by the anchor as soon as Ythe cam begins to lift the yoke to which the anchor is attached. The pattern pins or screws of the wheel or chain generally used are of different lengths in proportionto the distance that the anchor is required to swing, in order to act on the different steps on the long lever. The anchor is moved by a small rod connected to feeler-lever of angular form, the long limbA of the feeler-lever being connected to an arm of the anchor, and the short limb being engaged by the pins or screws of the pattern wheel or chain. The wheel or chain is moved by a long pusher or pawl,which is operated by an independent'cam on the loomshaft.` lhelifting-lever4 has attached toit on the side opposite to the lifting-point an arc which has a series of notches corresponding to the number of boxes, and with which engages a projection or tooth of a lever whose fulcrum is above the arc on a stud xed to the loom-frame, said lever being operated by a cam and lifted at the time when the long lever and boxes are to be shifted. It will be understood that in this construction, as the step on the long lever which is engaged by the 6o anchor corresponds to and regulates the movement of the shuttle-boxes, the anchor dropping only low enough to swing under'and lift one step, it would only move the boxes one step, or far enough to bring the next or adj oin- 6 5 ing box of the series to the level of the race- Away. It will be seenthat by this construction the boxes cannot be called at will, as is desirable in weaving fancy or complicated patterns, the combinationsbeing limited to those which 7o call for the boxes in regular order. The cam in the ordinary box-motion may be and is sometimes given throw enough to allow the anchor to drop low enough to swing under two steps, acting on the second step when the yoke is lifted, by these means moving the long lever and the boxes a double distance,

` or skipping one box. This cam, however, has

the disadvantage of dropping lowenough to take two steps at all times, even when the pat- 8o tern calls for adjoining boxes, or a single step on the long lever, in which case the anchor would only swing under and lift the first step, the cam having dropped the yoke and anchor lower than is required at this lift. The cam 8 5 would in this case be compelled to lift the yoke and anchor some distance before the anchor would come in contact with the step which it is required to lift. It will be seen v that the full time or the entire lift of the cam 9o will not be utilized in making a single-box lift, or the lift of one step on the long lever. 4As the boxes must be in position at a certain time for the travel of the shuttle, and as the cam has not'been moving the boxes during its 95 entire lift or throw, but only during a part of it, it will beseen that the boxes must be moved much more rapidly to get in position on time. This will give the boxes a disagreeable jerkingmovement not at 'all desirable, taking at 10o 'the same time considerably more power to speed. By this construction such patterns can be' woven as call for adjoining boxes, or even skip one box in the series of boxes, although this is accomplished in a very unsatisfactory manner, for. the reasons stated.

My invention consists of an improved construction of parts, hereinafter described and claimed, whereby the anchor at every descent is permitted to drop as far as may be necessary for bringing any desired box of the series into position, but by which the anchor is allowed to descend only as far as the step on the box-lever with which it must engage to produce the desired change. By this means any lost motion of the anchor is prevented, and the full time of its lift is utilized for moving the boxes.

I do not wish to be understood as claiming a new movement in all box motions, but simply a new combination of devices by which the anchor motion, with afew additional parts, is permitted to accomplish new and improved results, although the boxes have been given the same movement by others with different combinations.

Referring to the drawings, A represents the anchor of the shuttle-box motion of a loom; A', the lifting-lever; B, the rising and falling yoke thereof, which is lifted by a cam, B', on the shaft B" of the loom. The anchor is connected with the feelerc' bya small rod or wire, c", inside the loom-frame, in the usual manner.

G represents a lever, which is pivoted at one end to the yoke B above the cam B', and carries near its middle a roller, H, which bears upon the cam B', the said lever having pivoted toits other end a weighted lever, D, whose upper end is formed with a series of steps, a, which are at different distances from the fulcrum of said lever D, there being two of such steps shown in the present instance.

E represents an arm or rod, which is attached at one end to the lever D, and at the other end to a feeler, c, which is pivoted to the frame of the loom and employed in connection with the usual feeler, c', it being noticed that the pattern-wheel b has two rows of pins or screws b.

Projecting horizontally inward from the yoke B, near the upper end thereof, is a tooth, F, which is so disposed that it may be engaged by the steps of the lever D.

Projecting from the frame of the loom adjacent to the upper portion of the yoke B is a stop, G, which is so disposed that it may be engaged by the lever C. When the loom is in motion and the irst or highest step of the lever D engages with the tooth F, the levers C D are locked, and the yoke and anchor, when raised by the cam B' acting against the roller H, have a movement equal to the lift of the cam, or to the lift of the yoke and anchor of the ordinary construction, until the cam, in lifting the levers and yoke, causes the free end of the lever C to come in contact with the fixed stop G at the end of the lift, thus giving a slight additional rise to the yoke and its pro jection or tooth, and relieving the step of the lever D which is in contact with the tooth F of any pressure, thus allowing said step to drop from the tooth, if required to do so by the pattern. In making a single lift, or the distance from a box to the adjoining one, the additional feeler c rests on the bare portion of the wheel or chain b, and leaves the top step of lever D in engagement with the tooth F. Vhile the parts are so engaged the anchor will descend at each movement only the distance of one step on the lever A', and when it rises will move the boxes only one cell. Then a two-box lift, or the skipping of one box, is called for, which will require movement the distance of two boxes, the additional feeler rests on the short pin of the wheel, thereby allowing the common or first step of the weighted lever D to drop from connection with the tooth F a distance in proportion to the height of the pattern-pin, thus presenting the second step ofthe lever D to the tooth F, and permitting the anchor in its next descent to drop an additional distance equal to the space between the steps. This will allow the anchor to descend the distance of two steps on thelever A', and when the anchor rises it will mofe the boxes two cells. This second step always comes into action in making a two-box lift or drop. In case the pattern-chain requires a three-box lift or drop or a full lift or drop between the extreme boxes, the feeler c rests on a pattern-pin ofthe next size or length, and the lever D will be permitted to move far enough to relieve the tooth F of both steps\ot` said lever D, this action coming into play in skipping two boxes or making a full lift or full drop. \Vhen the anchor next descends, it will sink the distance of three steps of the lever A', and in rising will move the shuttle-boxes three cells. Thepattern-chain' is always moved to change the position of the feeler-levers and anchor, when the yoke is down, by the long pusher or pawl A", which acts on the teeth of the pattern-wheel I), said pusher being operated by a separate cam on the driving-shaft B". As the lever -D is not free to move at this time because of its step being pressed against IOO the tooth F, the rod E, that connects said lever Y with the additional feeler c, has a slot at the end which is connected to the feeler, said slot receiving a pin or screw on the fecler. The feeler is thus permitted to move without compelling the lever D to move at the same time, thereby leaving said lever free to move when the yoke is raised or at the top of its stroke, at which time the pressure of the step against the tooth F will be relieved, so that the lever, with its connecting-rod, is free to drop, under the inuence of its weighted arm D', in the direction the feeler has previously moved until the screw on the feeler-lever comes in contact with the end of the slot of the connecting rod.

movement of the yoke and anchor through The lever D controls the downward its steps a. When the lever D is moved laterally far enough to present the second'step to the tooth, the yoke andy anchor in their next descent, as before stated, will drop a distance in proportion to and limited by the height between the first and second steps, this dropping of the yoke being in addition to the drop allowed by the cam B on the shaft B. As the weight of the yoke and anchor presses on the fulcrum of the lever C, the latter, resting near its center on the camv B', will have its free end raised, carrying with it the lever D, until the second step of the latter comes in contact withthe tooth F. Should the lever D be movedlaterally for a full lift or drop, the yoke and anchor will be free to drop still lower until the free end of the lever 4so as to allowjthe projection on the lockinglever CX to enter said notches, for the purpose of locking the lever and shuttle-boxes during the movement of the shuttle, as customary in the ordinary construction of box-motions. To secure this result, the yoke is raised-to the same point at each lift by the vcarn B, raising the lever C near its middle. When the free end of said lever comes in contact with the stop G, the yoke continues to rise until the caml has completed its lift, by which means the cam lifts the yoke through the medium of thelever C to the same point at all times. The yoke need not descend as low to make a single-box lift, or a lift which is the height of one step on the boX-lever'A, as it would to make a two or three box lift, which would be the height of two or three steps on theleverA. If the yoke did drop to the lowest point at all times in making a single-box lift, there would be considerable lost motion of the yoke and anchor before the anchor could-act on the proper step of the lever A in making a change of only one begin to lift the long lever A at different points, accordingto the distance the shuttlebOXes are to be shifted, but always beginning to lift at the same time in the rotation of the loom-shaft, or at the same radial line on the cam, whether it be a single, double, or full lift or drop, by which means each movement of the boxes will take the same time in the revolution of the loom-shaft, whichl is usually one-quarter of the rotation of said shaft.

VHaving thus described my invention, what I claim as new, and desire to "secure by Letters Patent, isV

1. The lever C, in combination with the yoke B, the loom-shaft, the cani thereon, the loomframe, and the stop G thereon, said lever being pivoted to the yoke resting on said cam, and having its free end adapted to come 1n contact with said stop, substantially as and for the purpose set forth.

2. The lever O,`weighted lever D, having a series of steps, and means for controlling the position of said lever, in combination with the tooth or projection F, the yoke, and the cam B', substantially as and for the purpose set forth.

3. The rod E, feeler c, and pattern mechanism, in combination with the lever D, lever C, yoke B, and operating-cam, said rod having a slot at one end and connecting the lever D with the feeler, substantially as and for the purpose set forth.

4. The anchor and yoke and their operatingcam and the lifting-lever, in combination with the lever C, the lever D, provided with steps a, means for controlling the position of the lever D and the yoke, the tooth F, and stop G, substantially as and for the purpose set forth.

5. The anchor, the feeler c', connections between said feeler and the anchor, the yoke, and the operating-cam, the lifting-lever, the pattern wheel or chain provided with adouble row of pins or screws, and thepusher or pawl A and its operating mechanism, in combination with the additional feeler c, rod E, lever D, provided with steps a, lever C, tooth F, and stop G, substantially as and for the purpose set forth.

CHAS. STROBEL.

Witnesses:

J oHN A. WIEDERSHEIM, F. COOPER.v 

